Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
ho chinh » cho chinh, hoa chinh, do chinh
tran van » luan van
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chinh) OR (hoc chinh)) sach - thanh ((tran van) or (trung quoc)) nhung cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chinh) OR (hoc chinh)) sach - thanh ((tran van) OR (trung quoc)) nhung cong san phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chinh) OR (hoc chinh)) sach - thanh ((tran van) or (trung quoc)) nhung cong san phan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chinh) OR (hoc chinh)) sach - thanh ((tran van) or (trung quoc)) nhung cong san phan cau*.